JOHN MARTIN DAM, COLORADO

Period of Record General Climate Summary - Cooling Degree Days

Station:(054388) JOHN MARTIN DAM
From Year=1941 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	0	1	14	87	275	547	737	666	390	115	3	0	2832
57	0	0	8	61	225	488	675	604	335	84	1	0	2481
60	0	0	3	33	159	400	582	511	256	48	0	0	1993
65	0	0	0	8	72	262	428	358	143	14	0	0	1286
70	0	0	0	1	23	144	277	212	61	2	0	0	720

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu